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    inverse function question

    how do you do this? the answer is a.
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    complex number question

    If the complex number z satisfies \left|z\right|-z-4\left(1-2i\right)=0, which of the following is \left|z^2\right|? (A) 80 (B) 180 (C) 100 (D) 400 Answers C
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    Finance Question

    How does denominating the buying and selling of exports in the same currency minimise exchange rate exposure. In the textbook it says how one way natural hedging can work is through : Arranging for import payments and export receipts denominated in the same foreign currency; hence any losses...
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    i feel like im failing

    rip my atar. my internals r so bad. my minds all over the place. just want this year to be over with.
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    hedging question

    In the textbook it says that one method of establishing a natural hedge can be achieved by "arranging for import payments and export receipts denominated in the same foreign currency; hence any losses from a movement in the exchange rate will be offset by gains from the other. " However, I am a...
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    complex number question

    why is the answer c?
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    probability question

    There are 4 families and each family has 4 children. Assume the probability of having a boy or girl is 1/2. Determine the probability that exactly 2 of the families will have exactly 2 boys and 2 girls as children. Answer : 675/2048
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    proofs question

    let f(x) = e^x -x -1 a) prove f(x) > 0 for all x except 0 b) by finding a suitable value of x, prove e^(pi) > (pi)^e i know how to do question a; but how do you get question b? for question b, the answer says substitute x= (pi/e) - 1; but how do you find this value in the first place?
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    feeling defeated

    haha yea we gonna have our next assessment in less than a week
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    feeling defeated

    Got my ext 2 maths marks for the first task back; feeling extremly defeated because I got one of the lowest marks in the grade. I don't know how I am going to come back from this; arghhhh im so frustrated at myself.
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    reduction formulae question help!!

    how do i do this question?
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    complex number help!!

    Ahhh I'm so bad at complex numbers!! I feel like no matter how many times I practice, I am not getting better!! Could someone tell me how to get 11d? I feel like I'm pretty close, but can't quite get it.
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    maths question help !!

    thanks ur a bloody legend
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    maths question help !!

    How do I do this question : In triangle abc, d is the midpoint of bc and angle bac is 90 degrees. Use the vector method to show that length da= length bd.
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    complex numbers question

    How do I do this question? Find all the zeroes of the polynomial P(x) = x^4+4x^3+11x^2+14x+10 given that all the roots are in the form a ± bi and a ± 2bi. ANS : -1 ± i, -1 ± 2i
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    roots of unity questions

    How did you come to this conclusion?
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    roots of unity questions

    1. Let w be a seventh root of unity. Find the equation of the quadratic polynomial with roots w+w^2+w^4 and w^3+w^5+w^6. ANS : x^2+x+2 2. Let w be the principal nth root of unity. Prove that w conjugate = w^(n-1)
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    Complex number questions

    1. Prove that if z1+z2+z3= 0 and|z1|=|z2|=|z3|= 1, then the pointsz1, z2andz3are the vertices of an equilateral triangle inscribed in the unit circle. 2. Let a,b,c be complex numbers representing vertices of triangle ABC, let w = cos(2 pi/3) + isin (2pi/3) show that triangle ABC is equilateral...
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    2020 HSC+ ATAR results discussion Thread

    5 more hrs omgg i cant sleep
  20. P

    2020 HSC+ ATAR results discussion Thread

    super nervous for my marks tmrw... think i screwed up eco real bad
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